# OS_GetTotalAllocSize

## C Specification

      #include <nitro/os.h>

      u32 OS_GetTotalAllocSize( OSArenaId id, OSHeapHandle heap );

## Description

This function obtains the total size of the memory blocks allocated to the heap.

Set OS_CURRENT_HEAP_HANDLE in heap to specify the current heap.

The size refers to the size of the data regions. The memory block headers are not included in the size value.

All allocated blocks are tracked down and calculated, so the time required for the process is proportional to the amount of memory blocks.

## Arguments

id | Arena ID of the arena for the heap from which the total size is obtained
heap | Heap handle of the heap from which the total size is obtained

## Return Values

The total size (in bytes) of the memory blocks allocated to the heap.

## See Also

`OS_InitAlloc, OS_GetTotalFreeSize, OS_GetMaxFreeSize
`

## Revision History

11/05/2004 Initial Version